ATxmega64B1 Atmel Corporation, ATxmega64B1 Datasheet - Page 95
ATxmega64B1
Manufacturer Part Number
ATxmega64B1
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega64B1
Flash (kbytes)
64 Kbytes
Pin Count
100
Max. Operating Frequency
32 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
53
Ext Interrupts
53
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
3
Twi (i2c)
1
Uart
2
Segment Lcd
160
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
16
Adc Resolution (bits)
12
Adc Speed (ksps)
2000
Analog Comparators
4
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
AES/DES
Sram (kbytes)
8
Eeprom (bytes)
2048
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
Yes
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.6 to 3.6
Operating Voltage (vcc)
1.6 to 3.6
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
10
Input Capture Channels
10
Pwm Channels
10
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATxmega64B1-AUR
Manufacturer:
ATMEL
Quantity:
210
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7.11.4
7.11.5
8291A–AVR–10/11
COMP1 – Compare Register Byte 1
COMP2 – Compare Register Byte 2
The COMP1 and COMP2 register pair represent the frequency ratio between the oscillator and
the reference clock. The initial value for these registers is the ratio between the internal oscillator
frequency and a 1.024kHz reference.
• Bit 7:0 – COMP1[7:0]: Compare Register Byte 1
These bits hold byte 1 of the 16-bit compare register.
• Bit 7:0 – COMP2[15:8]: Compare Register Byte 2
These bits hold byte 2 of the 16-bit compare register.
Table 7-11.
Bit
+0x05
Read/Write
Initial Value
Bit
+0x06
Read/Write
Initial Value
Oscillator Frequency (MHz)
R/W
R/W
7
0
7
0
Nominal DFLL32M COMP values for different output frequencies.
R/W
R/W
6
0
6
0
30.0
32.0
34.0
36.0
38.0
40.0
42.0
44.0
46.0
48.0
50.0
52.0
54.0
R/W
R/W
5
0
5
0
R/W
R/W
4
0
4
0
COMP[15:8]
COMP[7:0]
R/W
R/W
3
0
3
0
Atmel AVR XMEGA B
COMP Value (Clk
R/W
R/W
2
0
2
0
R/W
R/W
0xBEBC
0xCDFE
0xA7D8
0xC65D
0xAF79
0xB71B
1
0
1
0
0x7270
0x7A12
0x81B3
0x8954
0x90F5
0x9896
0xA037
RCnCREF
R/W
R/W
0
0
0
0
= 1.024kHz)
COMP1
COMP2
95
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